[windows2000] Re: 192.168.*.* - why?

From: "Sullivan, Glenn" <GSullivan@xxxxxxxxxxxxxx>

To: "'windows2000@xxxxxxxxxxxxx'" <windows2000@xxxxxxxxxxxxx>

Date: Mon, 18 Nov 2002 09:16:01 -0500

Actually Ray that is one of three IP address ranges that is "Non-internet
Routable"
Taken from:
http://www.oser.org/~oser/ds/node20.html
<------------snip------------>
Several address blocks are special. The address ranges from 10.0.0.0 to
10.255.255.255, 172.16.0.0 to 172.31.255.255 and 192.168.0.0 to
192.168.255.255 are unassigned (RFC1918). They can be used on internal
networks. Theses addresses are non-routable and are useful for private
networks.
<------------snip------------>
Any internet router should drop packets from these addresses. Which is a
good thing...
Glenn Sullivan, MCSE+I MCDBA
David Clark Company Inc.
-----Original Message-----
From: Costanzo, Ray [mailto:rcostanzo@xxxxxxxxxxx]
Sent: Monday, November 18, 2002 8:59 AM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] 192.168.*.* - why?
Hi list,
I'm just curious about something. It seems that most networks use
192.168.*.* for their internal addresses. Why? It doesn't really
matter, does it? Isn't 192.168.*.* completely arbitrary? My theory on
how this came to be the norm is that MS used those addresses in some
samples in some books or something, and people started using that and it
just became the norm. But then there's that whole Internet connection
sharing feature that came out in what, W98SE? With that, the computer
that's sharing its Internet connection will be 192.168.1.1. So, I
imagine that it's coded somewhere into other OS'es to look to see if
192.168.1.1 can be used as a gateway when the user does not specify an
IP configuration. So what came first? 192.168.*.* or computers looking
to 192.168.1.1 as a gateway? Or what my real question is is why
192.168.*.*?
Thanks,
Ray at work
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